OpenStax, Introductory Statistics 2e §7.3 Using the Central Limit Theorem · Exercise 15 · Statistics · Sampling distributions
Using the Central Limit Theorem · Exercise 15
The length of time a particular smartphone's battery lasts follows an exponential distribution with a mean of ten months. A sample of 64 of these smartphones is taken.
Find the probability that the sample mean is between seven and 11.
OpenStax, Introductory Statistics 2e · §7.3 Using the Central Limit Theorem · Exercise 15
Stuck? A gentle nudge
No hints for this one.
Your working
Check your full solution
Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.